Developer guide
Find the services behind the number.
A phone number can connect to several services. QuietPass brings calling, messaging, and registration checks into one product, while keeping the meaning of each result clear.
Six services
| Service | What it checks | Access and pricing |
|---|---|---|
| Voice | Check whether the number supports voice calls. | Contact us |
| SMS | Check whether the number supports text messages. | Contact us |
| Check whether a WhatsApp account is registered with the number. | Contact us | |
| Viber | Check whether a Viber account is registered with the number. | Contact us |
| Telegram | Check whether a Telegram account is registered with the number. | Contact us |
| RCS | Check RCS capability for your business sender and its supported networks. | Contact us |
Capability and registration
Voice and SMS checks concern calling and messaging capability. WhatsApp, Viber, and Telegram checks concern account registration. RCS capability is specific to your business sender and its network coverage.
Account registration does not establish identity, ownership, delivery, or permission to contact. Each result keeps its own status and time so you can decide how to use it.
Use a result in your flow
Use service information to help choose a contact or verification method. Keep a fallback when a check cannot give a definite answer, and follow your own contact preferences and consent requirements.
Get started
Create your account and verify your own number. Contact us to discuss service-check access, countries, and pricing.